latching relay mmk · latching relay mmk mechanically latching relays based on the mm power relay...

CSM_MMK_DS_E_2_1

1

Latching Relay

MMKMechanically Latching Relays Based on the MM Power Relay

• Low power consumption due to mechanical latch for economic operation.

• Relays with mixed coil specifications can be produced (e.g., AC set coil and DC reset coil).

• Operational response fast enough to enable pulse signal power applications.

• Ambient operating temperature: –10°C to 55°C.

Refer to Safety Precautions for All Relays.

Ordering Information

Models Conforming to Auxiliary Power Relay SpecificationsThe MM4KP-JD and MM4XKP-JD satisfy the ratings of auxiliary relays provided in JEC-2500 (1987) standards for power protective relays specifiedby the Japan Electromechanical Commission. Furthermore, the MM4KP-JD and MM4XKP-JD satisfy the ratings of multi-contact relays providedin JEC-174D (1979) standards for power auxiliary relays.

These models work at operation level A specified by JEC-174D (1979) standards and the hot start of the relays is possible after the coils radiateheat.

In accordance with JEC-2500 (1987) standards, the coil of each model withstands a 130% DC load or 115% AC load.

Available Models

Open Coils (with Solder Terminals)

Type Contact form Open structure Cased

Solder terminals Screw terminals Plug-in (octal pins) terminals

Standard DPDT MM2K MM2KB MM2KP

3PDT MM3K MM3KB MM3KP

4PDT MM4K MM4KB ---

DPDT+DPST-NO --- --- MM4KP

DC-switching DPDT MM2XK MM2XKB MM2XKP

3PDT MM3XK MM3XKB MM3XKP

4PDT MM4XK MM4XKB ---

DPDT+DPST-NO --- --- MM4XKP

Conforming to auxiliary power relay specifications

DPDT+DPST-NO --- --- MM4KP-JDMM4XKP-JD

Rated coil voltage

Note: When ordering, add the rated coil voltage to the model number. Rated coil voltages are given in the coil ratings table. Example: MM2K, 6 VAC

Type Contact form Relay model Available rated voltage

Standard DPDT MM2K 100/(110), 200/(220) VAC12, 24, 48, 100/110, 200/220 VDC

3P3T MM3K 100/(110), 200/(220) VAC48, 100/110 VDC

DPDT+DPST-NC MM4K 200/(220) VAC12, 24, 48, 100/110, 200/220 VDC

DC-switching DPDT MM2XK 24, 100/110 VDC

3P3T MM3XK 200/(220) VAC100/110 VDC

DPDT+DPST-NC MM4XK 100/(110) VAC100/110 VDC

MMK

2

Open Coils (with Screw Terminals)

Cased Coils (Plug-in Terminals)

Model Number Legend

1. Contact Form2: DPDT3: 3PDT4: 4PDT (open structure type)/

DPDT+DPST-NO (cased type)2. Type (see note)

None: StandardX: DC-switching

3. Terminal ShapeNone: SolderB: ScrewP: Plug-in

Note: The suffix “JD” indicates models conforming to auxiliary powerrelay specifications.


Standard DPDT MM2KB 100/(110), 200/(220) VAC12, 24, 48, 100/110 VDC

3P3T MM3KB 100/(110), 200/(220) VAC12, 48, 100/110 VDC

DPDT+DPST-NC MM4KB 24, 100/(110), 200/(220) VAC100/110 VDC

DC-switching DPDT MM2XKB 100/(110), 200/(220) VAC12, 24, 48, 100/110, 200/220 VDC

3P3T MM3XKB 200/(220) VAC24, 100/110 VDC

DPDT+DPST-NC MM4XKB 24, 48, 100/110, 125, 200/220 VDC


Standard DP MM2KP 6, 12, 24, 100/(110), 200/(220) VAC12, 24, 48, 100/110, 125, 200/220 VDC

3P MM3KP 24, 100/(110), 200/(220) VAC6, 12, 24, 48, 100/110, 125, 200/220 VDC

4P MM4KP 24, 100/(110), 200/(220) VAC6, 12, 24, 48, 100/110, 125, 200/220 VDC

DC-switching DP MM2XKP 24, 100/(110), 200/(220) VAC12, 24, 48, 100/110, 125, 200/220 VDC

3P MM3XKP 100/(110), 200/(220) VAC24, 48, 100/110, 125, 200/220 VDC

4P MM4XKP 100/(110), 200/(220) VAC6, 12, 24, 48, 100/110, 125, 200/220 VDC

Conforming to auxiliary power relay specifications

4P MM4KP-JD 24, 100/(110), 115, 200/(220) VAC24, 100/110, 125, 200/220 VDC

Conforming to auxiliary power relay specifications for DC-switching

4P MM4XKP-JD 100/(110), 115, 200/(220) VAC24, 48, 100/110, 125, 200/220 VDC

MM@@K@1 2 3

MMK

3

Accessories (Order Separately)

Sockets

Mounting Brackets

Specifications

Coil Ratings

Set Coil

Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15%/–20% for AC rated current and±15% for DC coil resistance.

2. Performance characteristic data are measured at a coil temperature of 23°C.3. The AC coil resistance values are reference values.4. The maximum voltage is one that is applicable instantaneously to the Relay coil at an ambient temperature of 23°C and not continuously.∗Values in parentheses are for open relays.

Relay DIN Track/Front-connecting Socket Back-connecting Socket

Screw terminals Solder terminals

MM2(X)KP

MM3(X)KPMM4(X)KP

14PFA PL15

MM4(X)KP-JD 14PFA ---

Contact form Model

DPDT R99-03 (S KANAGU) FOR MM2K.611K

3PDT R99-03 (S KANAGU) FOR MM3K.612K

4PDT R99-03 (S KANAGU) FOR MM4K.613K

11PFA PL11

Rated voltage (V)

Rated current (mA) Coil resistance (Ω)

Set volt.

Max volt.

Power consumption (VA or W)DP 3P, 4P

Open Relays Cased Open Relays Cased

50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz DP 3P, 4P % of rated voltage

AC 6 790 655 690 590 1,285 1,100 1,165 1,000 1.1 0.46 80% max.

110% Initial: DP: Approx. 6.23P, 4P: Approx. 12Rated:DP: Approx. 3.5 (3.9)3P, 4P: Approx. 6 (6.6)∗

12 395 325 345 295 640 550 580 500 4.7 1.9

24 195 160 170 145 320 275 290 250 19 8.2

50 94 78 82 70 154 132 140 120 82 34

100/ (110)

47 39/45 41 35/40 77 66/76 70 60/68 340 141

200/ (220)

23.5 19.5/22.5

20.5 17.5/20

38.5 33/38 35 30/34 1,540 563

DC 6 340 450 17.5 13.4 DP: Approx. 2.13P, 4P: Approx. 2.712 176 220 68 54

24 87 94 275 255

48 41 52 1,180 930

100/110

17/19 22/24.5 5,750 4,500

200/220

8.6/9.5 11/12 23,200 18,000

MMK

4

Reset Coil


2. Performance characteristic data are measured at a coil temperature of 23°C.3. The AC coil resistance values are reference values.4. The maximum voltage is one that is applicable instantaneously to the Relay coil at an ambient temperature of 23°C and not continuously.

Coils (Conforming to Auxiliary Power Relay Specifications)


2. The AC coil resistance and coil inductance values are for reference only.3. Performance characteristic data are measured at a coil temperature of 23°C.4. The maximum voltage is one that is applicable instantaneously to the Relay coil at an ambient temperature of 23°C and not continuously.

Rated voltage (V) Rated current (mA) Coil resistance (Ω)

Reset voltage Maximum voltage Power consumption(VA or W)50 Hz 60 Hz % of rated voltage

AC 6 770 690 2.3 80% max. 110% Initial: Approx. 6.5Rated: Approx. 4.112 385 345 9.2

24 191 170 35

50 92 82 175

100/(110) 46 41/46 739

200/(220) 23 20/23 3,030

DC 6 422 14.2 Approx. 2.8

12 215 56

24 109 220

48 58 832

100/110 25/27 4,040

200/220 12.2/13.5 16,330

Rated voltage (V)

Rated current (mA) Coil resistance (Ω)

Set voltage

Reset voltage

Max. voltage

Opera-tion level (JEC-174D)

Power consumption (VA or W)

Set coil Reset coil Set coil

Reset coil

Set coil Reset coil

50 Hz 60 Hz 50 Hz 60 Hz % of rated voltage Initial Rated Initial Rated

AC 24 245 210 191 170 8.5 35 80% max.

80% max.

110% A Approx. 6.3

Approx. 5.1

Approx. 6.5

Approx. 4.150 117 102 92 82 36 175

100/ (110)

58.5 51/58 46 41/46 150 739

110 53 46 42 37.3 182 835

115 51 44 40 35.7 210 885

200/ (220)

29 25.5/ 29

23 20.5/ 23

620 3,030

220 26.5 23 21 18.6 780 3,420

DC 24 94 109 255 220 Approx. 2.7 Approx. 2.8

48 52 58 930 832

100/ 110

22/24.5 25/27 4,500 4,040

125 22 23.5 5,800 5,330

200/ 220

11/12 12.2/13.5 18,000 16,330

MMK

5

Contact Ratings

Standard Relays

DC-switching Relays

Note: 1. When switching DC inductive loads at 125 V or more, an unstable region exists for a switching current of between 0.5 and 2.5 A. The Relay will not turn OFF in this region. Use a switching current of 0.5 A or less when switching 125 VDC or more.

2. If L/R exceeds 7 ms when switching DC inductive loads, an arc-breaking time of up to 50 ms must be considered in application and thecircuit must be designed to ensure that an arc-breaking time of 50 ms is not exceeded.

Contacts (Conforming to Auxiliary Power Relay Specifications)

Note: 1. When switching DC inductive loads at 125 V or more, an unstable region exists for a switching current of between 0.5 and 2.5 A. The Relay will not turn OFF in this region. Use a switching current of 0.5 A or less when switching 125 VDC or more.

2. If L/R exceeds 7 ms when switching DC inductive loads, an arc-breaking time of up to 50 ms must be considered in application and thecircuit must be designed to ensure that an arc-breaking time of 50 ms is not exceeded.

Item Open Relays: MM2K(B), MM3K(B), MM4K(B) Cased Relays: MM2KP, MM3KP, MM4KP

Resistive load (cosφ = 1)

Inductive load (cosφ=0.4, L/R=7 ms)



Contact mechanism Single

Contact material Ag

Rated load 10 A at 220 VAC7 A at 24 VDC

5 A at 220 VAC 4 A at 24 VDC

Rated carry current 10 A 5 A

Max. switching voltage 250 VAC, 250 VDC 250 VAC, 250 VDC

Max. switching current 10 A 5 A

Max. switching power(reference value)

2,200 VA, 168 W 1,100 VA, 96W

Item Open Relays: MM2XK(B), MM3XK(B), MM4XK(B) Cased Relays: MM2XKP, MM3XKP, MM4XKP






Contact material Ag

Rated load 7 A at 110 VDC 6 A at 110 VDC 5 A at 110 VDC

Rated current flow 10 A 5 A

Max. switching voltage 250 VAC, 250 VDC 250 VAC, 250 VDC

Max. switching current 10 A 5 A

Max. switching power(reference value)

800 W, 20 VA 660 W, 20 VA 700 W, 20 VA 600 W, 20 VA

Item MM4KP-JD MM4XKP-JD


Inductive load(cosφ = 0.4, L/R= 7 ms)


Inductive load(cosφ = 0.4, L/R= 7 ms)


Contact material Ag

Rated load 5 A at 220 VAC, 4 A at 24 VDC 5 A at 110 VDC

Rated carry current 5 A

Max. switching voltage 250 VAC, 250 VDC

Max. switching current 5 A

MMK

6

Characteristics

Note: 1. The data shown above are initial values.2. The contact resistance was measured with 1 A at 5 VDC using the voltage drop method.3. The set or reset time was measured with the rated voltage imposed with any contact bounce ignored at an ambient temperature of 23°C.4. The insulation resistance was measured with a 500-VDC megger applied to the same places as those used for checking the dielectric

strength.5. The electrical endurance was measured at an ambient temperature of 23°C.6. This value was measured at a switching frequency of 60 operations per minute.

Characteristics (Conforming to Auxiliary Power Relay Specifications)

Note: 1. The data shown above are initial values.2. The electrical endurance was measured at an ambient temperature of 23°C.3. This value was measured at a switching frequency of 60 operations per minute.

Item Open or bifurcated-contact Relays

Contact resistance (see note 2) 50 mΩ max.

Set time (see note 3) AC: 30 ms max.; DC: 60 ms max. (minimum pulse width for AC and DC: 100 ms)

Reset time (see note 3) 30 ms max. (minimum pulse width for AC and DC: 100 ms)

Max. operating frequency Mechanical: 1,800 operations/hrElectrical: 1,800 operations/hr (under rated load)

Insulation resistance (see note 4) 100 MΩ min. (at 500 VDC)

Dielectric strength 1,500 VAC, 50/60 Hz for 1 min between contacts of same polarity2,000 VAC, 50/60 Hz for 1 min between contacts of different polarity, between contacts and coil, and between set and reset coils

Vibration resistance Destruction: 10 to 55 to 10 Hz, 0.375 mm single amplitude (0.75 mm double amplitude)Malfunction: 10 to 35 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude)

Shock resistance Destruction: 500 m/s2

Malfunction: 50 m/s2

Endurance Mechanical: 2,500,000 operations min. (at 1,800 operations/hr)Electrical: 500,000 operations min. (at 1,800 operations/hr under rated load) (see note 5)

Error rate (level P)(Reference value)(see note 6)

10 mA at 5 VDC

Ambient temperature Operating: –10°C to 55°C (with no icing or condensation)

Ambient humidity Operating: 5% to 85%

Weight Standard Relays DC-switching RelaysMM2K: Approx. 255 g MM2XK: Approx. 260 gMM3K: Approx. 390 g MM2XK: Approx. 395 gMM4K: Approx. 420 g MM4XK: Approx. 430 gMM2KP: Approx. 375 g MM2XKP: Approx. 380 gMM3KP: Approx. 550 g MM3XKP: Approx. 555 gMM4KP: Approx. 570 g MM4XKP: Approx. 580 g

Vibration resistance Destruction: 10 to 55 to 10 Hz, 0.375 mm single amplitude (0.75 mm double amplitude)Malfunction: 10 to 22 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude)

Shock resistance Destruction: 300 m/s2

Malfunction: 30 m/s2

Endurance Mechanical: 2,500,000 operations min. (at 1,800 operations/hr)Electrical: 500,000 operations min. (at 1,800 operations/hr under rated load) (see note 2)

Error rate (level P)(Reference value)(see note 3)

10 mA at 5 VDC

Ambient temperature Operating: –10°C to 40°C (with no icing or condensation)

Ambient humidity Operating: 5% to 85%

Weight MM4KP-JD: Approx. 570 gMM4XKP-JD: Approx. 580 g

MMK

7

Engineering Data

Standard Relays

DC-switching Relays

Maximum Switching PowerOpen Relays

Switching voltage (V)

Cased Relays

Sw

itchi

ng c

urre

nt (

A)

Sw

itchi

ng c

urre

nt (

A)AC resistive load

DC resistive load

DC inductive load (L/R = 7 ms)

AC inductive load(cosφ = 0.4)

Switching current (A)

AC resistive load

AC inductive load(cosφ = 0.4)

DC resistive load

DC inductive load (L/R = 7 ms)

MM@K(B) MM@KP

Endurance CurvesOpen Relays Cased Relays


220 VAC resistive loadInductive load(cosφ = 0.4)

24 VDC resistive loadInductive load L/R = 7 ms


220 VAC resistive loadInductive load(cosφ = 0.4)

24 VDC resistive loadInductive load L/R = 7 ms

10,000

1,000

500

300

5,000

3,000

End

uran

ce (

x10

ope

ratio

ns)

3

End

uran

ce (

x10

ope

ratio

ns)

3

10,000

1,000

500

300

5,000

3,000

MM@K(B) MM@KP

Maximum Switching PowerOpen Relays


Cased Relays


DC inductive loadL/R=7 ms

DC resistive load

DC inductive loadL/R=7 ms

DC resistive load

MM@XK(B) MM@XKP

Sw

itchi

ng c

urre

nt (

A)

Sw

itchi

ng c

urre

nt (

A)

MMK

8

Relays Conforming to Auxiliary Power Relay Specifications

Endurance CurvesOpen Relays Cased Relays

Switching current (A)Switching current (A)

110 VDC resistive load

110 VDC inductive load(L/R 7 ms)

110 VDC resistive load Inductive loadL/R=7 ms

End

uran

ce (

x10

ope

ratio

ns)

3

10,000

1,000

500

300

5,000

3,000

End

uran

ce (

x10

ope

ratio

ns)

3

10,000

1,000

500

300

5,000

3,000

MM@XK(B) MM@XKP

Maximum Switching PowerMM4KP-JD MMX4KP-JD

Endurance CurvesMM4KP-JD MM4XKP-JD

AC resistive loadAC inductive loadcosφ = 0.4

DC resistive load

DC inductive loadL/R = 7 ms


DC resistive load

DC inductive load L/R = 7 ms


End

uran

ce (

x 10

)4

220 VAC resistive loadInductive loadcosφ = 0.4

24 VDC resistive load Inductive loadL/R = 7 ms


End

uran

ce (

x 10

)4

110 VDC resistive load Inductive loadL/R = 7 ms


Sw

itchi

ng c

urre

nt (

A)

Sw

itchi

ng c

urre

nt (

A)

MMK

9

Ambient Temperature vs. Set and Reset VoltageMM4KP AC (60 Hz)

Ambient Temperature vs. Coil Temperature RiseMM4KP 110 VAC (60 Hz)

Malfunctioning Shock

MM4(X)KP

MM4KP DC MM4KP DC

Mus

t-op

erat

e an

d re

set v

olta

ge (

%)

Number of Relays: 5 Set voltageReset voltage

Ambient temperature (°C)

Coi

l tem

pera

ture

ris

e (

C)

° Number of Relays: 5

Contact carry currentSet coilReset coil


Reset60 min.

60 min. 60 min.

60 min.

60 min.

60 min.

Unit: m/s2

Number of samples: 3

Measurement conditions: Impose a shock of 50 m/s2 in the ±X, ±Y, and ±Z directions three times each with the Relay energized and not energized to check the shock values that cause the Relay to malfunction.

Mus

t-op

erat

e an

d re

set v

olta

ge (

%)

Number of Relays: 5 Set voltageReset voltage


Coi

l tem

pera

ture

ris

e (

C)

Number of Relays: 5

Contact carry currentSet coilReset coil


Shock direction

°

MMK

10

DimensionsNote: All units are in millimeters unless otherwise indicated.

Open Relays with Solder Terminals

Open Relays with Screw Terminals

86 max.

44 max.28±0.2

50 max.

94 max.

29±0.234

±0.2

MM2(X)K, MM3(X)K, MM4(X)K

MM2(X)K MM3(X)K

94 max.

63 max.

MM4(X)K

MM2K

15 max.

Two, M4 mounting holes

58.5 max.

Side View

2P 1P 3P 1P2P 4P 2P3P 1P Common C

Stationary A

Stationary B

Set coil

Reset coil

Note: Connect the common (C) of MM@XK to positive (+).

±0.222

22±0.2

MM2(X)KB, MM3(X)KB, MM4(X)KB

MM2KB

92 max.

Ten, M3.5 x 5.5 terminal screws

60 max.

MM2(X)KB

Thirteen,M3.5 x 5.5 terminal screws

101 max.

28±0.2

MM3(X)KB

Sixteen, M3.5 x 5.5 terminal screws

68 max.

34±0.2

101 max.

MM4(X)KB

15 max.

Two, M4 mounting holes

58.5 max.

29±0.2

Side View

60 max.

2P 1P 2P 1P3P 2P 1P3P4P Common C

Station-ary AStation-ary BSet coil

Reset coil

Note: Connect the common (C) of MM@XKB to positive (+).

Mounting Holes (Direct Mounting)Note: The tolerance is ±0.2.

Two, 4.5-dia. mounting holes

29±0.2Dimensions of : l2-pole: 22±0.2 mm3-pole: 28±0.2 mm4-pole: 34±0.2 mm

l

Mounting Bracket (S Bracket)R99-03 (S KANAGU) FOR MM@

The S Bracket can be used to mount a Relay with open solder or screw terminals.

W H

29±0.2 60±0.2 50D

l

Item R99-03(S KANAGU)

FOR MM2K.611K (DPDT)

R99-03(S KANAGU)

FOR MM3K.612K (3PDT)

R99-03(S KANAGU)

FOR MM4K.613K (4PDT)

l 22±0.2 28±0.2 34±0.2

D 71 max. 71 max. 71 max.

W 33 max. 39 max. 45 max.

H 6 max. 6 max. 6 max.

MMK

11

Cased Relays with Plug-in Terminal

Cases on Models for Switching DC LoadsAs shown at the right, there are three holes with a 10-mm diameter in the case.

80.5 max.

Terminal Arrangement/Internal Connections (Bottom View)

Note: Connect the common (C) to positive (+). Make sure that all common connections are the same in polarity. The markings of the common connections on the casing all show "+" but the polarity of the common connections can be either all negative or all positive.

Standard RelaysMM2KP

DC-switching RelaysMM2XKP

MM2(X)KP

22

54.5 max. (see note)

119 max.

64.5 max.

3.5 7

MM2KP

5

RESET

SET

RESET

SETNote: It is recommended that 55 mm min. is allowed for this side because the MM2XKP has a curved protective plate on the side.

80.5 max.


Note: Connect the common (C) to positive (+). Make sure that all common connections are the same in polarity. The markings of the common connections on the casing all show "+" but the polarity of the common connections can be either all negative or all positive.

Standard Relays

MM3KP

DC-switching RelaysMM3XKP

MM3(X)KPMM4(X)KP 72.5 max.

(see note)123 max.

64.5 max.

MM4KP

MM4KP MM4XKP

Note: It is recommended that 73 mm min. is allowed for this side because the MM3XKP and MM4XKP have a curved protective plate on the side.

Case Protective PlateBe sure the polarity is correct when connecting Exposed Models.

This example is for the MN2XK. This also applies to models with 3 or 4 poles.

MMK

12

Accessories

Sockets

Note: When using the MM@KP-JD by itself, the PL15 Back-connecting Socket cannot be used.

Height with Socket

Relay model DIN Track/Front-connecting Socket Back-connecting Socket

Screw terminals Solder terminals

MM2(X)KP

MM3(X)KPMM4(X)KP

14PFA PL15

MM4(X)KP-JD 14PFA ---

MM4KP-JD

70.5 max.

72.5 max.123 max.

64.5 max.


Note: The MM4KP-JD is DPDT and DPST-NO.

MM4XKP-JD

70.5 max.

73 max.123 max.

64.5 max.

Note: The MM4XKP-JD is DPDT and DPST- NO. Make sure that all common connections are the same in polarity. The markings of the common connections on the casing all show "+" but the polarity of the common connections can be either all negative or all positive.

11PFA PL11

MM3KP MM3XKP MM4KP MM4XKPMM4(X)KP-JD

151.5

MM2KP MM2XKP

151

11PFA 14PFA

155147.5

DIN Track/Front-connecting Socket Back-connecting Socket

PL11 PL15

124 128MM2KP MM2XKP

MM3KP MM3XKP MM4KP MM4XKP

Note: @PFA can be both track-mounted and screw-mounted.

MMK

13

Safety PrecautionsRefer to Safety Precautions for All Relays.

MountingMake sure that the Relay is free from iron powder or iron core, otherwise the iron dust may adhere to the Relay. As a result the movable contact may not operate properly.

An arc may be generated between the contacts in switching operation. Be sure to keep combustible objects away from the Relay. If the arc will have a bad effect around the Relay, the use of a model with a casing is recommended.

A model switching DC load incorporates an insulation base with a small built-in permanent magnet. Be sure to keep magnets or ferrous objects away from the permanent magnet, otherwise the capacity of the maximum switching current may drop.

The PL Back-connecting Socket must be flush-mounted from the surface of the panel.

If two or more Relays are mounted together, make sure that a minimum space of 20 mm is provided between adjacent Relays.

Be sure to mount the Relay so that the movable contact is in the downward direction.

Connection• When connecting a load to the contact terminals of a model for

switching DC loads (“X” models), consider the polarity of the con-tact terminals so that the generated arcs on the adjacent poles willnot collide. (For example, if the common connections of the Relayare all positive or all negative, no arc collision will occur.)

• Use proper crimp terminals or 1.2- to 2-mm-dia. single-conductorwire to connect screw terminals.

Screw Terminal ModelDo not bend the coil terminals, otherwise the coil wire may be dis-connected. Make sure that the tightening torque applied to each ter-minal is 1.27 N • m and the insertion force is 49 N for 10 s.

Solder Terminal ModelMake sure that Relay terminals are free of flux or other foreign sub-stance before soldering the Relay terminals. Finish soldering theRelay terminals quickly, otherwise the coil wire may be broken.

Circuits• You cannot use single contact to demagnetize the set coil as shown

below.

• NC contacts can remain open for a few milliseconds when the resetcoil turns ON and OFF. NO contact can remain open for a few milli-seconds when the set coil turns ON and OFF while the Relay islatched. Design your circuits to allow for this.

• Do not allow voltage to be applied simultaneously to both the setand reset coil. If voltage is applied simultaneously, the Relay will beset.

• There is no reason to apply voltage to Latching Relays continu-ously because they will latch properly with a single pulse of suffi-cient width. Continuously applying voltage will only waste power.

• A model for DC loads incorporates a permanent magnetic for arcsuppression. Keep floppy disks away from the Relay, otherwise thedata on the floppy disk may be damaged.

• Arcing when switching DC power can cause nitric gas to be generated. The case of the MM@XKP contains holes to allow the gas to escape. This, however, makes it possible for dust and dirt to enter the case. Be sure to use the MM@XKP in a suitable environment.

20 mmmin.

MMK MMKNormal mounting direction

Latching Relay coilNC contact of the Relay

Load

MMK contact (NC)

The contact may fail to hold itself.

Relay coil

In the interest of product improvement, specifications are subject to change without notice.

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

Read and Understand This Catalog Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments.

Warranty and Limitations of Liability WARRANTY OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED. LIMITATIONS OF LIABILITY OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted. IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

Application Considerations SUITABILITY FOR USE OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's application or use of the products. At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product, machine, system, or other application or use. The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:

• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog. • Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles,

safety equipment, and installations subject to separate industry or government regulations. • Systems, machines, and equipment that could present a risk to life or property.

Please know and observe all prohibitions of use applicable to the products. NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM. PROGRAMMABLE PRODUCTS OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.

Disclaimers CHANGE IN SPECIFICATIONS Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual specifications of purchased products. DIMENSIONS AND WEIGHTS Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown. PERFORMANCE DATA Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of OMRON’s test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability. ERRORS AND OMISSIONS The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

2008.11

In the interest of product improvement, specifications are subject to change without notice.

OMRON Corporation Industrial Automation Company http://www.ia.omron.com/

(c)Copyright OMRON Corporation 2008 All Right Reserved.

latching relay mmk · latching relay mmk mechanically latching relays based on the mm power relay...

Documents